Vanessa's Geologic Timeline

By VanessaWurttele

  • Cambrian 570-500 MYA

    Cambrian 570-500 MYA
    Trioabites were dominant. All of Earth was oceans with emerging of small granite continents. All life was marine.

  • Ordovician 488-443 MYA

    Ordovician 488-443 MYA
    Most of the Earth was entirely ocean and tropics.

  • Silurian 435-395 MYA

    Silurian 435-395 MYA
    Earliest terrestial plants and animals. Bony fish. Peak development of euryplerids.

  • Devonian 395-345 MYA

    Devonian 395-345 MYA
    Earliest amphibians and ammonites. Extinction of armored fishes, abundant fishes.

  • Carboniferous 345-280 MYA

    Carboniferous 345-280 MYA
    Earliest reptiles. Coal forming forests. Abundant sharks and amphibians. A lot of large scale trees and seed ferns.

  • Triassic 225-195 MYA

    Triassic 225-195 MYA
    Earliest dinosaurs. Abundant cycades and conifers.

  • Jurassic 195-136 MYA

    Jurassic 195-136 MYA
    Earliest birds and mammals. Abundant dinosaurs and ammonites.

  • Cretaceous 136-65 MYA

    Cretaceous 136-65 MYA
    Earliest flowering plants. Climax of dinosaurs and ammonites followed by extinction. Great decline of brachiopods. Great development of bony fishes.

  • Tertiary 65-1.8 MYA

    Tertiary 65-1.8 MYA
    Humans, mastodons, mammoths. Large carnivores. Abundant grazinf animals. Large running mammals. Many modern types of mammals. Earliest placental mammals.

  • Quaternary - Present

    Quaternary - Present
    Large carnivores, neanderthals, humans, mastodons.